Recent content by jawhnny

Maybe the PCM or defined Torque PIDs cheat by looking at other values? Im assuming here but could it not just use the crankshaft speed or engine rpm, use that as a input speed of the trans, and compare it to the output speed even just using the vehicle speed sensor? Then tcc slip speed is just...

My Jimmy is using a P59 I believe Mine never had a Tow/Haul button either but I did see it say it would use that shift table if commanded by the TCCM if it if shifted into 4lo. I also saw I could enable a setting in TunerPro to enable it by a momentary ground to pin 71 on the PCM instead of...

Gotta say this is an interesting thread! I went to school for some introductory networking and this reminds me of the painful hours of learning binary and hexadecimal... but this subject matter keeps it interesting! I recently flashed my 05' 4.3L GMC Jimmy with the popular 12587603 OS and am...